Alvaneu (Romansh: Alvagni) is a village and former municipality in the district of Albula in the canton of Graubünden in Switzerland . On 1 January 2015 the former municipalities of Alvaschein , Mon, Stierva , Tiefencastel , Alvaneu, Brienz/Brinzauls and Surava merged to form the new municipality of Albula/Alvra .

On 20 March 2007 Peter Martin Wettler, a media expert and resident of Zurich was appointed Prince of Belfort by the village's authorities.

Alvaneu is first mentioned in 1244 as Aluenude. In 1530 it was mentioned as Allweneü.

Before the merger, Alvaneu had a total area of 35.7 km2 (13.8 sq mi).